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Plate Tectonics Test Review

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What is the difference between the Lithosphere and the Asthenosphere? What is the difference between the outer core and the inner core? – PowerPoint PPT presentation

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Title: Plate Tectonics Test Review


1
Plate Tectonics Test Review
2
Label the different layers of the earth and
explain the importance of each layer
  • Crust Solid, made of basalt or granite
  • Mantle
  • Lithosphere Solid. Plates
  • Asthenosphere Liquid, convection currents
  • Outer Core Molten material
  • Inner Core Solid nickel and iron

3
What is the difference between Basalt and
Granite?
Granite
Basalt
4
What is the difference between the Lithosphere
and the Asthenosphere?
  • Both are in the mantle, but.

1. Lithosphere Solid and are where the plates
are 2. Asthenosphere More Liquid and where
convection currents happen
5
What is the difference between the outer core and
the inner core?
  • Outer Core Molten material
  • Inner Core Solid nickel and iron

6
How does temperature and pressure relate to the
layers of the earth?
  • As you go deeper into the earth, the pressure and
    the temperature both increase

7
What are Convection Currents? Where are they
located in the layers of the earth? What do they
cause?
  • Convention currents in the mantle, cause the
    lithosphere (bottom of the crust) to move
  • This causes the crust of the earth to move around

8
What is Pangaea?
  • Wegeners hypothesis all continents had once
    been joined together in a single land mass and
    have since drifted apart

9
What is the evidence for Pangaea?
  • Fossil Evidence of plants and animals
  • Glacier evidence
  • Coal Deposits/Mountain evidence
  • Puzzle Fit of continents

10
Who came up with Pangaea?
  • Wegener

11
How does Pangaea relate to Continental Drift?
  • Continental Drift Wegeners idea that the
    continents slowly moved over Earths surfaces
    causing Pangaea to break apart

12
Why did people not believe Wegners theory of
Pangaea and Continental Drift?
  • Because Wegner could not identify the cause of
    continental drift or why the continents broke
    apart

13
What is the Mid-Ocean Ridge?
  • Mid Ocean Ridge longest chain of mountains in
    the world under the oceans.

14
What is Sea Floor Spreading? What is the evidence
that it is occurring?
  • Sea Floor Spreading the process by which molten
    material adds new oceanic crust to the seafloor
  • Evidence
  • molten material
  • magnetic stripes
  • drilling samples

15
How do subduction and trenches relate to one
another?
  • Subduction causes a trench to form

16
Who came up with Sea Floor Spreading?
  • Harry Hess

17
Label
Mid-Ocean Ridge
Volcano
Trench
Subduction
Magma
Magnetic Strips
Sea floor spreading
18
Label
Oldest Crust
Newest Crust
Lithosphere
Basalt
Asthenosphere
Granite
19
Draw
New crust forms here
20
What are Plates?
  • The lithosphere is broken into separate sections
    called plates

21
What are faults?
  • Faults breaks in the earths crust
  • Faults are formed along plate boundaries

22
The Theory of Plate Tectonics
Transform Boundary Transform Boundary
Motion Sliding past one another
Effect Earthquakes
Topography None created
Volcanic Activity None
Picture
Draw this!
23
The Theory of Plate Tectonics
Divergent Boundary Divergent Boundary
Motion Spreading
Effect Oceanic Lithosphere created
Topography Ridge or Rift valley (Mid ocean ridge)
Volcanic Activity Yes lava pours out the cracks in the ocean floor
Picture
Draw this!
24
The Theory of Plate Tectonics
Convergent Boundary Convergent Boundary
Motion Subduction
Effect Oceanic Lithosphere destroyed
Topography Trench
Volcanic Activity Yes as the plate submerges, it melts and can can rise back up to the surface as lava
Picture
Draw this!
25
How does density of plates relate to plate
tectonics and subduction?
  • The plate that is more dense will go under
    (subduct) the other plate.

26
What is a Hot Spot?
  • Area where magma rises upwards and erupts in the
    middle of a plate

27
Oldest Island
Youngest Island
Plate moving this way
Hot Spot
28
Use the map to explain the relationship between
volcanoes/earthquakes and plate boundaries.
  • Earthquakes and volcanoes occur on plate
    boundaries
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